A Gide to the Study of Fresh-Water

Biology

Fifth edition, revised and enlarged

By

James G. Needham & Paul R. Needham

Holden-Day, Inc., San Francisco

Contents

Part 1.  Aids to the Recognition of Fresh-Water Algae, Invertebrates, and Fish

<!--Algae

<!--Protozoans

<!--[if !supportLists]-->C. Miscellaneous invertebrates

<!--Rotifers

<!--Molluscs (Mollusca)

<!--[if !supportLists]-->F. Crustaceans (Crustacea)

<!--[if !supportLists]-->G. Miscellaneous Insects

<!--[if !supportLists]-->H. Stonefly Nymphs (Plecoptera)

<!--Mayfly Nymphs (Ephemeroptera)

<!--[if !supportLists]-->J.  Dragonfly and Damselfly Nymph (Odonata)

<!--Water Bugs (Hemiptera)

<!--Caddisfly Larvae (Trichoptera)

<!--Two-Winged Files (Diptera)

<!--Beetles (Coleoptera)

<!--Fresh-water fishes

Part 2.  Methods of Sampling and Analyzing Aquatic Organisms and their Environments

<!--[if !supportLists]-->·   Equipment

<!--Caring for field collections

<!--Methods of taking quantitative bottom samples

<!--Distribution and abundance of stream-dwelling organisms

<!--Analyzing water for oxygen, carbon dioxide, and alkalinities

<!--[if !supportLists]-->·  Methods of collecting fishes

<!--[if !supportLists]-->·  Preservation of fishes

<!--[if !supportLists]-->·  Methods of collecting fish scales

<!--[if !supportLists]-->·  Stream and lake surveys

<!--Studies of aquatic environments

<!--[if !supportLists]-->· Suggested outline for studies

 *****  نسخة مصورة مهداة لمكتبة الهيئة  *****

Prep. /Ayman Ashry

Rev. / Asmaa Ahmed

Manage/ Zienab Osman